I am an ardent believer in it, given how many times it has saved our assets at work, often to the point of annoying people. That said, I usually end up being right for insisting on more time and/or data, so it’s all good.

However, my spoonerific brain always gets this twisted to “measure once, cut twice”.

I unknowingly wrote this once in a comment about asking for more metrics during a design review.

My colleague (the author of said design document) replied with the relevant metrics and a comment saying “measure never, cut forever”. :D